The fertilization can be either internal or external, but they always reproduce by laying eggs. A common misconception is that snails are amphibians - although some snails are found on land and some in water, these are two distinct varieties; snails are not amphibians. Main Difference. The characteristics of animals within reptiles might differ with some reptiles being closer to amphibian while others are closer to birds. The three orders are separated on the basis of their different appearances or structures. However, there are two known species of venomous frogs, Bruno’s casque-headed frog, and Greening’s frog. The biggest difference between amphibians and reptiles is that amphibians can live on both land and in water; this is known as dual lives. Reptiles belong to class Reptilia. Amphibians have smooth, sticky, moist and highly porous skin to perform the various function, whereas reptiles have dry, hard and scaly skin, which guard them in harsh condition. The main difference between mammals and amphibians is that mammals produce milk to feed their babies whereas amphibians do not produce milk. About 5500 species of amphibians are identified worldwide. Amphibians are a group of cold-blooded vertebrates that are capable of exploiting both aquatic and terrestrial habitats. A salamander is a group of amphibians that has a lizard-like appearance with a stout elongated body, two pairs of short limbs, and a tail. In a sense, they spend the first half of their life in water and the other half on land. Amphibians usually have to stay near water sources to prevent drying out, and have smooth skin. Reptiles include turtle, lizard, crocodiles, snakes while amphibians include frogs, salamander, toads, newts. No aquatic larval form is present in the reptilian life cycle. The heart in the case of amphibians is a three-chambered with two auricles and a ventricle. Some sea turtles might have flippers instead of legs. The female provides protection to the young ones for several weeks to months. Key differences between amphibians and reptiles Amphibians spend part of their life in water and part on earth, while reptiles live especially on earth. Amphibians undergo metamorphosis whereas reptiles do not experience any larval stages. Young amphibians undergo a process called metamorphosis to transition into adulthood. Presence of body hair is defining characteristics of mammals whereas reptiles have keratin epidermal layer called scales. No. Learn how your comment data is processed. The actual skin is found underneath the dry scales, which are made of keratin. Difference Between Amphibians And Reptiles While it has been said earlier that reptiles typically have evolved from amphibians, certain environmental factors on land had prompted reptiles to diverge from amphibians. It then undergoes metamorphosis to form adult salamander. Examples of amphibians are frogs, toads, salamanders, newts and caecilians. The word reptile means “to creep stealthily under cover of darkness. In both cases they are ectothermal animals, which mean that they are cold-blooded. Hatching occurs within days or a month during which the temperature of the soil is critical. The first major groups of amphibians developed in the Devonian Period(  A period of geological time around 350 million years ago) from fishes similar to the modern coelacanth where the fins had evolved into legs. Let us now study the difference between amphibians and reptiles. Reptile eggs are leathery and are laid on land. The shape and size of these scales defer depending on the species. The differences between reptiles and amphibians are what most people tend to be interested in. Amphibians are vertebrates. No such glands are found on the skin of reptiles. Eggs of amphibians are soft without any type of external membrane and are usually attached to the stems of aquatic plants. They are vertebrates and cold blooded (ectothermic). Most of them are aquatic while some live both land and on water, and some are entirely terrestrial. Reptiles: Reptiles are animals that are cold blooded which lay eggs and their skin is covered with hard and dry scales. Reptile and amphibian are distantly related to each other; hence they also have a number of similarities. This helps the animals survive in the water. Some of the reptiles have a pair of limbs while others are limbless.
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